How do I join a list in Python?

Question

When I want to unite a array in PHP, I use the function array_merge

Thus:

$a = [1, 2, 3];

$b = [4, 5, 6];

array_merge($a, $b);

Upshot:

[1, 2, 3, 4, 5, 6]

And how could I do that in Python in a list (I think a list is equivalent to array in PHP, if I’m not mistaken)?

Example:

a = [1, 2, 3]

b = [4, 5, 6];

Answer 1

You can just add the two:

a = [1, 2, 3]
b = [4, 5, 6]
print (a + b)

Behold working in the ideone. And in the repl it.. Also put on the Github for future reference.

Python overloads operators as much as possible to make them more intuitive and short. Some disagree that this is more intuitive but many find it quite obvious.

Just don’t forget you don’t have ; in Pyhton :)

Answer 2

You can use the extend(). Example:

a = [1, 2, 3]
b = [4, 5, 6]
a.extend(b)
print a

Upshot:

[1, 2, 3, 4, 5, 6]

More information about list methods: Pythons Docs - Data Structures